The lesion at the base of the keratin mound is benign in the majority of cases. Malignancy is present in up to 20% of cases, with squamous cell carcinoma being the most common type. The incidence of squamous cell carcinoma increases to 33% when the cutaneous horn is present on the penis.alignancy is present in up to 20% of cases, with squamous cell carcinoma being the most common type. The incidence of squamous cell carcinoma increases to 33% when the cutaneous horn is present on the penis.
For example, the average human gestation period is 38 weeks. Gestation may normally last anywhere from 37 to 42 weeks, however, and be considered well within the healthy range. Any child born before 37 weeks is considered preterm, and this can be accompanied by any number of health risks.
So most of the time, the start of the gestation period is taken to be from the beginning of the previous menstrual period. Also, there are many more factors that decide the time that the embryo takes to develop into a full-grown baby. How Long is the Gestation Period for Humans.This interval between the last menstrual period to childbirth is roughly 40 weeks. Thus, the gestation period for humans in days can be calculated as 280 days. However, the actual gestation period, as compared to other mammals, is around 267 days.o most of the time, the start of the gestation period is taken to be from the beginning of the previous menstrual period. Also, there are many more factors that decide the time that the embryo takes to develop into a full-grown baby. How Long is the Gestation Period for Humans.